Overview
The SN74CBTD3861DWR is a 10-bit FET bus switch with level shifting, manufactured by Texas Instruments. This component is designed to provide high-speed TTL-compatible bus switching, making it suitable for applications requiring fast edge rates and high-frequency operations. The device features a single output-enable (OE) input, allowing for the connection or disconnection of the two ports (A and B) based on the OE state. When OE is low, the switch is on, connecting port A to port B, and when OE is high, the switch is open, resulting in a high-impedance state between the two ports.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Manufacturer | Texas Instruments | |
| Package Type | SOIC-24 | |
| Supply Voltage Range | –0.5 V to 7 V | V |
| Input Voltage Range | –0.5 V to 7 V | V |
| On-State Resistance (Rds(on)) | 5 Ω | Ω |
| Continuous Channel Current | 128 mA | mA |
| Input Clamp Current (IIK) | –50 mA | mA |
| Operating Temperature Range | –40°C to 85°C | °C |
| Storage Temperature Range | –65°C to 150°C | °C |
| Package Thermal Impedance (θJA) | 46°C/W (DW package) | °C/W |
Key Features
- Level Shifting: The device includes a diode to VCC, enabling level shifting from 5-V signals at the inputs to 3.3-V signals at the outputs.
- Low On-State Resistance: The switch has a low on-state resistance of 5 Ω, allowing connections with minimal propagation delay.
- TTL-Compatible Input Levels: The device is designed to work with TTL-compatible input levels.
- Single Output-Enable (OE) Input: The OE input controls the connection or disconnection of the two ports (A and B).
- High-Speed Operation: Suitable for applications with fast edge rates and high frequencies.
Applications
- Bus Switching in High-Speed Systems: Ideal for systems requiring fast data transfer and minimal propagation delay.
- Level Shifting Applications: Useful in scenarios where voltage level translation between different logic levels is necessary.
- High-Frequency Operations: Suitable for applications operating at high frequencies, such as in telecommunications and networking equipment.
- General-Purpose Logic Circuits: Can be used in various general-purpose logic circuits where bus switching and level shifting are required.
Q & A
- What is the primary function of the SN74CBTD3861DWR?
The primary function is to provide 10-bit FET bus switching with level shifting capabilities.
- What is the package type of the SN74CBTD3861DWR?
The package type is SOIC-24.
- What is the on-state resistance of the switch?
The on-state resistance (Rds(on)) is 5 Ω.
- What is the operating temperature range of the device?
The operating temperature range is –40°C to 85°C.
- How does the level shifting feature work?
The device includes a diode to VCC, allowing level shifting from 5-V signals at the inputs to 3.3-V signals at the outputs.
- What is the role of the output-enable (OE) input?
The OE input controls whether the switch is on (connecting port A to port B) or off (high-impedance state between the two ports).
- What are the typical applications of the SN74CBTD3861DWR?
Typical applications include bus switching in high-speed systems, level shifting applications, high-frequency operations, and general-purpose logic circuits.
- What is the maximum continuous channel current?
The maximum continuous channel current is 128 mA.
- What is the input clamp current rating?
The input clamp current (IIK) rating is –50 mA.
- What is the storage temperature range of the device?
The storage temperature range is –65°C to 150°C.
